IBM PC 5150 and 720KB Floppy Drive - test-drb@ccmp.vtda.org

1 Oct 2002

In a message dated 10/1/2002 8:55:58 AM Eastern Daylight Time, voyager(a)hol.gr 
writes:

<< > I have just received an original IBM PC; actually, 2
...
  of them (one had to be parted out). I still
haven't
 checked the BIOS date, but the machine does have an
 origianl Intel 8088 and the power supply appears to be
 the original design. Here is the crux of the
 problem...

 I want to refit the machine with a 720 KB 3 1/2"
 drive. This was a fairly easy mod that we used to
 perform on XT's, but it seems to have problems finding
 the drive. Anybody out there have any experience with
 this?

 Robert >> 
Install the drive and start using it. Might need a cable adaptor depending on 
how old the 3.5 drive is. With a modern version of DOS, it will either work 
outright or you might need a DRIVEPARM statement to let DOS know it's a 720k. 